Introduction

We know now that as the frequency of a wave increases, its wavelength decreases. We would like to have a mathematical relationship to use, so that we are not constantly relying on measurements. The equation that links wavelength and frequency is known as the "wave speed equation".

Activity

The GoogleDoc linked to the icon below gives instructions for collecting the data that will be used to create the equation.

Assessment

Basic Competency

A full range of accurate measurements of wavelength are produced.
The data are presented to produce a linear relationship.

Full Competency

The data is analyzed in a few paragraphs, according to the standards established at the beginning of the year.

PhET Screenshot